SmogRank / World / France / December 2025

Most polluted cities in France, December 2025

93 cities in France ranked by their average PM2.5 over the 31 days. Worst: Meylan at 19.9 µg/m³, #562 of 2,638 cities in the world. Cleanest: Bastia at 5.1. A city needs measurements on 70% of the days to be ranked.

← Meylan 19.9
Every city in France ranked for December 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1MeylanAuvergne-Rhône-Alpes
    33
  2. 2GrenobleAuvergne-Rhône-Alpes
    33
  3. 3Romans-sur-IsèreAuvergne-Rhône-Alpes
    32
  4. 4AnnemasseAuvergne-Rhône-Alpes
    28
  5. 5MontbéliardBourgogne-Franche-Comté
    28
  6. 6LyonAuvergne-Rhône-Alpes
    28
  7. 7AvignonProvence-Alpes-Côte d'Azur
    28
  8. 8StrasbourgGrand Est
    27
  9. 9AlbertvilleAuvergne-Rhône-Alpes
    27
  10. 10Villefranche-sur-SaôneAuvergne-Rhône-Alpes
    27
  11. 10ValenceAuvergne-Rhône-Alpes
    27
  12. 12MulhouseGrand Est
    25
  13. 13BéthuneHauts-de-France
    23
  14. 14ArlesProvence-Alpes-Côte d'Azur
    23
  15. 15ChambéryAuvergne-Rhône-Alpes
    23
  16. 16VillefontaineAuvergne-Rhône-Alpes
    23
  17. 17MeyzieuAuvergne-Rhône-Alpes
    23
  18. 18CoulommiersÎle-de-France
    23
  19. 19LunévilleGrand Est
    22
  20. 20MarignaneProvence-Alpes-Côte d'Azur
    22
  21. 20DouaiHauts-de-France
    22
  22. 22ÉpinalGrand Est
    22
  23. 23PauNew Aquitaine
    22
  24. 23ParisÎle-de-France
    22
  25. 23AmiensHauts-de-France
    22
  26. 26Mont-de-MarsanNew Aquitaine
    22
  27. 26BeauvaisHauts-de-France
    22
  28. 28NîmesOccitanie
    22
  29. 29ThionvilleGrand Est
    22
  30. 30LilleHauts-de-France
    22
  31. 31VannesBrittany
    22
  32. 31Saint-ÉtienneAuvergne-Rhône-Alpes
    22
  33. 33RouenNormandy
    20
  34. 34MoulinsAuvergne-Rhône-Alpes
    20
  35. 35DunkirkHauts-de-France
    20
  36. 36OrléansCentre-Val de Loire
    20
  37. 36CreilHauts-de-France
    20
  38. 38ValenciennesHauts-de-France
    20
  39. 38DenainHauts-de-France
    20
  40. 40LormontNew Aquitaine
    20
  41. 41RoubaixHauts-de-France
    20
  42. 41ChartresCentre-Val de Loire
    20
  43. 41CalaisHauts-de-France
    20
  44. 44RennesBrittany
    20
  45. 44NancyGrand Est
    20
  46. 44LorientBrittany
    20
  47. 44Le HavreNormandy
    20
  48. 48RambouilletÎle-de-France
    20
  49. 49Bourg-en-BresseAuvergne-Rhône-Alpes
    18
  50. 50ToulouseOccitanie
    18
  51. 50Saint-QuentinHauts-de-France
    18
  52. 50Boulogne-sur-MerHauts-de-France
    18
  53. 50BordeauxNew Aquitaine
    18
  54. 54AuxerreBourgogne-Franche-Comté
    18
  55. 54AlençonNormandy
    18
  56. 56NeversBourgogne-Franche-Comté
    18
  57. 56ÉvreuxNormandy
    18
  58. 58Saint-AvoldGrand Est
    18
  59. 58QuimperBrittany
    18
  60. 60MetzGrand Est
    18
  61. 61ReimsGrand Est
    18
  62. 61PoitiersNew Aquitaine
    18
  63. 63DreuxCentre-Val de Loire
    18
  64. 63BourgesCentre-Val de Loire
    18
  65. 65LouviersNormandy
    18
  66. 66Joué-lès-ToursCentre-Val de Loire
    17
  67. 67BrestBrittany
    17
  68. 68VichyAuvergne-Rhône-Alpes
    17
  69. 68ToursCentre-Val de Loire
    17
  70. 70CaenNormandy
    17
  71. 71Salon-de-ProvenceProvence-Alpes-Côte d'Azur
    17
  72. 71Saint-DizierGrand Est
    17
  73. 71MontivilliersNormandy
    17
  74. 71BloisCentre-Val de Loire
    17
  75. 75PérigueuxNew Aquitaine
    17
  76. 75MontargisCentre-Val de Loire
    17
  77. 77DomontÎle-de-France
    17
  78. 77Clermont-FerrandAuvergne-Rhône-Alpes
    17
  79. 77Aix-en-ProvenceProvence-Alpes-Côte d'Azur
    17
  80. 80OlivetCentre-Val de Loire
    17
  81. 80NiortNew Aquitaine
    17
  82. 80MontluçonAuvergne-Rhône-Alpes
    17
  83. 80CherbourgNormandy
    17
  84. 80ChâteaurouxCentre-Val de Loire
    17
  85. 85MarseilleProvence-Alpes-Côte d'Azur
    15
  86. 86AngoulêmeNew Aquitaine
    15
  87. 87LimogesNew Aquitaine
    15
  88. 88ÉtampesÎle-de-France
    15
  89. 89NiceProvence-Alpes-Côte d'Azur
    13
  90. 90CannesProvence-Alpes-Côte d'Azur
    13
  91. 91FontainebleauÎle-de-France
    12
  92. 92AurillacAuvergne-Rhône-Alpes
    12
  93. 93BastiaCorsica
    8
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, December 2025 · France now

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SmogRank, most polluted cities in France, PM2.5, December 2025, smogrank.com/fr/history/2025-12 (accessed 2 Oct 2026).

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